Methane, familiar to most people as the main component of natural gas fuels, is a greenhouse gas less common than carbon dioxide in the atmosphere but far more potent.

甲烷是人们所熟悉的一种气体，是天然气燃料的主要成分。

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Compared with normal hammers, it has a lot of advantages, such as lower noise, no exhaust gas, less vibration, high piling energy and better dynamics characteristics.

与传统打桩锤相比较具有噪声小、无污染、振动小、打击能量高等优点，符合环保要求，并具有良好的动力学特性。

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His round-trip commute to work is less than that. "I wouldn't have to put a dime of gas in this ever."

VOA: standard.2010.07.30

Stays a gas, but now the pressure is less, the temperature is less.

它仍然是气态但现在压强变小了，温度降低了。

麻省理工公开课 - 热力学与动力学课程节选

If p2, the pressure in p2, is less than the pressure in p1, is the gas going to want to go from p2 to p1 and the whole thing reverse back?

比p1中的压强小,在整个逆向过程中气体,会从p2到p1中去吗？

麻省理工公开课 - 热力学与动力学课程节选

Mulva likes gas less for its green qualities, more because gas reserves are easier to secure and help the company replace its declining oil production.

FORBES: ConocoPhillips' Mulva Talks Up Gas

Much of this wedge is being driven by activists who oppose all fossil fuels and lobbyists for other energy sources eager to make natural gas less competitive.

FORBES: Vocal And Tiny Minority Propagates Natural Gas Disinformation

It could use less gas, resulting in less carbon emissions.

FORBES: How One Kid Can Make A Difference For The Environment